Motorola 900 series - Serial Ports (SP1- SP4) Configuration Options; Table 3-5. DTE Port, TRXC Programmed as Input; Table 3-6. DTE Port, TRXC Programmed as Output (Jumper on Pins 2-3); Table 3-7. DCE Port, TRXC Programmed as Output

VME Expansion Module
Serial Ports (SP1 - SP4) Configuration Options
Table 3-5. DTE port, TRXC Programmed as Input
(jumper on pins 1-2)
EIA232 Signal Name DB25Pin# Direction
SCCPin
Usage
TXC
RXC
ETXC
15 Input TRXC
Transmit Clock
17
Input
RTXC Receive Clock
24
Output
Not Used
Table 3-6. DTE port, TRXC Programmed as Output
(jumper on pins 2-3)
EIA232 Signal Name DB25Pin# Direction
SCCPin
Usage
TXC
15 Input
Not Used
RXC
17
Input
RTXC Receive Clock
ETXC 24
Output
TRXC Transmit Clock
Table 3-7. DCE port, TRXC Programmed as Output
(jumper on pins 2-3)
EIA232 Signal N arne DB25Pin# Direction SCCPin Usage
TXC 15 Output TRXC
Transmit Clock
RXC 17 Output TRXC Receive Clock
ETXC 24
Input RTXC
Optional transmit
clock
Serial
Port
Jumper Number
SPl
J7
SP2
J8
SP3
J6
SP4
J5
3-14
Reference Guide
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